Old Tcl scripts running on 8.6.x+ with corresponding Tcllib for crc32 package produce a checksum.
Now with Tcl 9.0.1 and corresponding Tcllib the crc32 package do the same,
but for some file's content an error occur.

Error message from "::crc::crc32" is "integer value too large to represent".
Problem seems to be inside of an operation of
"::crc::Crc32Update" and/or "::crc::Crc32Final".
If You install BAWT 3.0.1 64-Bit Tcl/Tk 9.0.1 for/on Windows 10/11,
You can check at least with the two following smallest files available:
2024-08-16 20:26:04   4108
2024-09-13 19:48:12   4121

Both files have correct UTF-8 encoding with simple UNIX-LF.
So there is another reason for this problem than the encoding of the file's contents.
(My first thinking is therefore wrong and I changed this description.)
Can anybody debug deeper into this?

Simple test in Tcl:
package require crc32
::crc::crc32 -filename

I use on ActiveTcl crc32 1.3.2 and found it on BAWT-distribution 3.0.1,
Tcllib 2.0, crc32 1.3.4 thanks.

Best greetings, Thomas [TWu]